CN107628010A - Without power-assisted hydraulic control brake system - Google Patents
Without power-assisted hydraulic control brake system Download PDFInfo
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- CN107628010A CN107628010A CN201710779368.6A CN201710779368A CN107628010A CN 107628010 A CN107628010 A CN 107628010A CN 201710779368 A CN201710779368 A CN 201710779368A CN 107628010 A CN107628010 A CN 107628010A
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Abstract
The invention discloses one kind without power-assisted hydraulic control brake system, including brake pedal, brake apparatus, actuator, it is connected between the brake pedal and actuator by brake apparatus, the brake apparatus includes brake pump, water brake valve, oil storage tank, accumulator and oil transfer pump, it is connected between the water brake valve and the brake pedal by brake pump, it is connected between the oil storage tank and accumulator by oil transfer pump, the oiler is connected by low pressure pipe with brake pump, the oil return opening is connected by low pressure pipe with oil storage tank, the pressure oil-in is connected by pressure oil pipe with accumulator, the pressure oil export is connected by pressure oil pipe with actuator.Structure of the invention by changing water brake valve in brakes, so that the brakes in the present invention no longer needs the help of vacuum booster, effectively prevent vacuum booster failure post-braking system can not work the generation of such case, simple in construction, and have stronger reliability.
Description
Technical field
The invention belongs to automobile brake system field, more particularly to one kind is without power-assisted hydraulic control brake system.
Background technology
As the improvement of people's living standards, automobile has become the walking-replacing tool of more and more people's choice for traveling.System
Dynamic system is that very strict one is required in the major system of automobile, and its effect is to ensure that a car can be at any time according to driving
The wish of member is slowed down and even stopped.The action of brake is to promote friction plate to be adjacent to brake disc by the piston of caliper, so that according to
Frictionally makes vehicle deceleration.This process seems simple, but whole system needs brake pedal, vacuum booster, braking
The support of master cylinder, caliper wheel cylinder and fluid pressure line.
Existing brake system, brake pedal can not only be stepped on manpower, it is necessary to by vacuum booster ability
Brake pedal is stepped on, the rear of brake pedal is exactly vacuum booster, and general vehicle is obtained from motor intake manifold
Vacuum is so as to realize power-assisted, and also some vehicle employs independent vacuum pump.
But vacuum booster the shortcomings that existing, is：When a large amount of air inlets of engine, it is easy to breaking vacuum environment, so as to
So that vacuum booster loses power-assisted effect.And the setting requirements driver of vacuum booster slams brake when brake
Pedal rather than brake pedal is trampled repeatedly, but at some in emergency circumstances, once driver easily repeatedly tramples system nervous
Dynamic pedal, so that the vacuum state in vacuum booster is destroyed causes brake failure so as to lose power-assisted effect.
Application publication number is that the A of CN 105752064 patent of invention discloses a kind of hydraulic braking system for automobile, including：
For producing the air pump of compressed gas, for the air pump output squeezing gas into air tank, the air tank stores compressed gas；Tool
There is the air booster of pressure chamber, the pressure chamber is connected by pressure chamber intake valve and pipeline with the air tank；Master cylinder
Piston push rod be connected through the air booster with pedal gear；The pedal gear applies to pressure to the piston push rod
The unlatching of the thrust in power liquid direction, movement of the piston push rod to pressure fluid direction and the pressure chamber intake valve has servo-actuated
Effect；After the pressure chamber inlet open, the compressed gas of the air tank enters the pressure chamber, the pressure of pressure chamber
Thrust is further applied to pressure fluid direction to the piston push rod.Although the invention improves the structure of vacuum booster, but
The shortcomings that above-mentioned described vacuum booster is present still be present, the situation of brake failure still easily occurs.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes one kind without power-assisted hydraulic control brake system, by changing braking system
The structure of water brake valve in system so that the brakes in the present invention no longer needs the help of vacuum booster, effectively prevents
Having stopped vacuum booster failure post-braking system can not work the generation of such case, simple in construction, and with stronger reliable
Property.
To achieve the above object, its technical scheme used is：It is a kind of to be stepped on without power-assisted hydraulic control brake system, including braking
Plate, brake apparatus, actuator, it is connected between the brake pedal and actuator by brake apparatus, the brake apparatus includes
Brake pump, water brake valve, oil storage tank, accumulator and oil transfer pump, pass through between the water brake valve and the brake pedal
Brake pump is connected, and is connected between the oil storage tank and accumulator by oil transfer pump, includes valve element on the water brake valve, enters
Hydraulic fluid port, oil return opening, pressure oil-in, pressure oil export, asphalt channel and for by the reset assembly of valve core reset, in valve element
During in highest point, the asphalt channel between the oil return opening, pressure oil export is connected, the pressure oil-in and pressure
Asphalt channel between power oil export is ended, after valve element moves down, the oil circuit between the oil return opening, pressure oil export
Passage is ended, and the asphalt channel between the pressure oil-in and pressure oil export is connected, and the oiler passes through low pressure
Oil pipe is connected with brake pump, and the oil return opening is connected by low pressure pipe with oil storage tank, and the pressure oil-in passes through pressure oil
Pipe is connected with accumulator, and the pressure oil export is connected by pressure oil pipe with actuator.
In said structure, when brake pedal is not stepped on, the position that valve element is located in water brake valve is highest point.Now
Water brake valve is closed, and in the presence of valve element, the asphalt channel between oil return opening, pressure oil export is connected,
Asphalt channel between pressure oil-in and pressure oil export is ended.After driver's brake pedal, brake pump is controlled
Start working, by the oiler in the low pressure oil injection water brake valve in oil storage tank, driver is applied on brake pedal
Power it is bigger, low pressure oil from brake pump enter brake valve oiler flow velocity it is bigger, valve element is in the presence of low pressure oil from most
Eminence moves down, and water brake valve now is in opening, and the asphalt channel between oil return opening and pressure oil export exists
Ended in the presence of valve element, and the asphalt channel between pressure oil-in and pressure oil export is connected in the presence of valve element
It is logical.Now pressure oil is pressed into water brake valve by the energy that has stored in advance by accumulator from pressure oil-in, then from pressure
Power oil export is flowed into actuator, so as to have the function that to reduce vehicle wheel rotational speed.After driver loosens the brake, valve element is multiple
Moved up in the presence of hyte part, water brake valve becomes closed mode, the oil return opening, pressure oil export from opening
Between asphalt channel be connected, the asphalt channel between the pressure oil-in and pressure oil export is ended.In actuator
Hydraulic oil enter from pressure oil outlet return in hydraulic pressure brake valve, then by asphalt channel from oil return opening flow out, into oil storage
Next use is remained in tank.By setting velocity sensor, the rotation speed change of wheel can be perceived, ABS system and control are set
Wheel lock up is prevented when the purpose of device is to bring to a halt and is skidded.Water brake valve in the present invention is provided with two, controls respectively
Two diagonal wheels of system, wherein in the case of a failure, another can still work, and avoid single water brake
Situation about can not be braked during defective valve, also comply with the regulation of country.
Further, the valve element also includes upper valve core and bottom spool, the upper valve core and bottom spool and water brake valve
Seal and coordinate between inwall, and be linked between upper valve core and bottom spool, the oiler is arranged on above upper valve core, described
It is provided with upper valve core for keeping the asphalt channel between oil return opening and pressure oil export when upper valve core is located at highest point
The upper channel of connection, being provided with when bottom spool moves down on the bottom spool keeps pressure oil-in and pressure oil export
The lower channel of connection.
In said structure, valve element is divided into upper valve core and bottom spool, is linked between upper bottom spool, upper valve core is individually responsible for
The keying of asphalt channel between oil return opening and pressure oil export, between the independent pressure charge oil-in of bottom spool and pressure oil export
The keying of asphalt channel.When valve element is closed, when upper valve core is located at highest point, upper channel and oil return on upper valve core
Asphalt channel between mouth and pressure oil export connects, now the lower channel on bottom spool and pressure oil-in and pressure oil export
Between asphalt channel be not communicated with, the asphalt channel between pressure oil-in and pressure oil export is ended；When valve element from close shape
After state becomes opening, when upper valve core moves down, bottom spool is driven to move down, the now upper channel of upper valve core and oil return
Asphalt channel is not attached between mouth and pressure oil export, and asphalt channel is ended between oil return opening and pressure oil export, bottom spool
Lower channel connected between pressure oil-in and pressure oil export.So setting is advantageous in that and is realized with simple structure
Keying relation between oil return opening, pressure oil export, pressure oil-in, simplifies the structure of water brake valve, enhances hydraulic pressure
Reliability when brake valve works so that the structure of water brake valve is more simplified rationally.
Further, the reset assembly includes (the first back-moving spring, and the (the first back-moving spring is arranged on the upper valve
Between core and bottom spool, upper protruding block is provided with the upper valve core lower surface, the (the first back-moving spring upper end is set in described
On upper protruding block, and inconsistent with the upper valve core lower surface, lower protruding block is provided with the upper surface of the bottom spool, described first
Back-moving spring lower end is set on the lower protruding block, and inconsistent with the upper surface of the bottom spool.
In said structure, set (the first back-moving spring to be advantageous in that realizes upper valve core and bottom spool with simple mechanism
Between be linked.After driver decontrols brake pedal, upper valve core can be in the presence of (the first back-moving spring back up
Peak is arrived again, asphalt channel between oil return opening and pressure oil export is connected, in the oil and actuator in water brake valve
Oil returned to by asphalt channel from oil return opening in oil storage tank, remain next use.The simple structure of the present invention, realizes valve
The reset of core so that water brake valve arrangement is more simplified rationally, convenient processing and maintenance.
Further, through hole is provided with the inwall on the water brake valve between upper valve core and bottom spool,
It is connected between the upper through hole and oil return opening by asphalt channel.
In said structure, compressed in (the first back-moving spring or during reset, where (the first back-moving spring
Cavity volume can change, and the oil in cavity passes in and out cavity by upper through hole, so as to keep the pressure in cavity stable so that
Upper valve core and bottom spool can work well.
Further, the reset assembly also includes second back-moving spring, and the second back-moving spring is arranged on described
Between bottom spool and water brake valve inwall, the second back-moving spring upper end and the bottom spool lower surface are inconsistent, lower end
It is inconsistent with water brake valve inwall.
In said structure, when driver decontrol brake pedal after, bottom spool in the presence of second back-moving spring back up
It is multiple, asphalt channel between pressure oil-in and pressure oil export is ended so that accumulator can not continue through brake valve to holding
Row device input pressure oil, actuator are stopped, and recover vehicle wheel rotational speed.The simple structure of the present invention, realizes answering for valve element
Position so that water brake valve arrangement is more simplified rationally, convenient processing and maintenance.
Further, lower through-hole is provided with the water brake valve on the inwall below bottom spool, it is described lower logical
It is connected between hole and oil return opening by asphalt channel.
In said structure, compressed in second back-moving spring or during reset, where second back-moving spring
Cavity volume can change, and the oil in cavity passes in and out cavity by lower through-hole, so as to keep the pressure in cavity stable so that
Bottom spool can work well.
Further, be provided with push rod at the bottom spool lower surface, the push rod upper surface with the bottom spool
End face is inconsistent, and the push rod is plugged in second back-moving spring, and the push rod lower end is provided with to be connected with pressure oil export
Asphalt channel.
In said structure, when the oil pressure in pressure oil exit is excessive, oil is forced into below push rod by asphalt channel, and
Push rod is pushed up upwards, bottom spool and upper valve core is moved up so as to by between pressure oil-in and pressure oil export by push rod
Asphalt channel ends, and asphalt channel between pressure oil export and oil return opening is connected so that and oil is returned in oil storage tank from oil return opening,
So as to reduce the oil pressure in actuator and water brake valve.The present invention is prevented in actuator that oil pressure is excessive and led with simple structure
Vehicle wheel rotational speed rapid drawdown is caused, there is more preferable reliability.
Further, the water brake valve also includes lid and lower cover, and the upper lid and lower cover difference are removably
It is arranged on water brake valve top and bottom.
In said structure, the purpose of lid and lower cover is to facilitate the structure inside processing hydraulic brake valve in setting, simultaneously
Maintenance personal is allowd more easily to change the parts such as upper bottom spool and back-moving spring in water brake valve.
Further, the upper lid is arranged on the water brake valve upper end by fixing screws, and the lower cover passes through solid
Determine screw and be arranged on the water brake valve lower end.
In said structure, upper lid and lower cover are fixed respectively by fixing screws, ensure that upper and lower covers stability and close
While envelope property, also with quick release the advantages of, time and cost required for significantly less assembling and maintenance.
Further, the pressure sensor for sensing pressure in accumulator, the oil transportation are provided with the accumulator
Oil pump electric-control system is additionally provided with pump, is electrically connected between pressure sensor and the oil pump electric-control system.
In said structure, pressure sensor can perceive the pressure in accumulator, when the pressure in accumulator is too small, oil
Pump electric control system controls oil transfer pump, the oil in oil storage tank is input in accumulator and pressurizeed, so as to ensure the pressure in accumulator
Power is maintained in the range of can working.
Brief description of the drawings
Accompanying drawing 1 is the present embodiment system construction drawing；
Accompanying drawing 2 is the present embodiment pressure oil-in partial sectional view；
Accompanying drawing 3 is the present embodiment side view；
Accompanying drawing 4 is the present embodiment valve element closed mode sectional view；
Accompanying drawing 5 is the present embodiment valve element opening sectional view；
Accompanying drawing 6 is the present embodiment top view；
Accompanying drawing 7 is view under the present embodiment.
Brake pedal 1, brake apparatus 2, actuator 3, ABS system 4, controller 5, velocity sensor 6,
Brake pump 21, water brake valve 22, oil storage tank 23, accumulator 24, oil transfer pump 25, brake disc 31, brake assembly 32,
Upper lid 22a, lower cover 22b, fixing screws 22c, valve element 221, oiler 222, oil return opening 223, pressure oil-in 224, pressure
Power oil export 225, asphalt channel 226, (the first back-moving spring 227, second back-moving spring 228, push rod 229, pressure sensor
241st, oil pump electric-control system 251,
Upper valve core 221a, bottom spool 221b, upper channel 2211, lower channel 2212, upper protruding block 2213, lower protruding block 2214, upper through hole
2215th, lower through-hole 2216.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is specifically described.
From accompanying drawing, the present embodiment is one kind without power-assisted hydraulic control brake system, including brake pedal 1, brake apparatus
2nd, actuator 3, it is connected between brake pedal 1 and actuator 3 by brake apparatus 2, brake apparatus 2 includes brake pump 21, hydraulic pressure
Brake valve 22, oil storage tank 23, accumulator 24 and oil transfer pump 25, pass through brake pump 21 between water brake valve 22 and brake pedal 1
It is connected, is connected between oil storage tank 23 and accumulator 24 by oil transfer pump 25, is provided with accumulator 24 for sensing accumulator 24
The pressure sensor 241 of middle pressure, oil pump electric-control system 251, pressure sensor 241 and oil pump electricity are additionally provided with oil transfer pump 25
Electrically connected between control system 251.Include valve element 221, oiler 222, oil return opening 223, pressure oil on water brake valve 22 to enter
Mouthfuls 224, pressure oil export 225, asphalt channel 226 and for by the reset assembly of valve core reset, the reset in the present embodiment
Component includes (the first back-moving spring 227 and second back-moving spring 228, when valve element 221 is in highest point, oil return opening 223, pressure
Asphalt channel 226 between oil export 225 is connected, the asphalt channel between pressure oil-in 224 and pressure oil export 225
226 are ended, and after valve element 221 moves down, the asphalt channel 226 between oil return opening 223, pressure oil export 225 is ended,
Asphalt channel 226 between pressure oil-in 224 and pressure oil export 225 is connected, and oiler 222 is by low pressure pipe with stopping
Car pump 21 is connected, and oil return opening 223 is connected by low pressure pipe with oil storage tank 23, and pressure oil-in 224 is by pressure oil pipe with storing
Energy device 24 is connected, and pressure oil export 225 is connected by pressure oil pipe with actuator 3.
Valve element 221 in the present invention, including upper valve core 221a and bottom spool 221b, upper valve core 221a and bottom spool 221b with
Seal and coordinate between the inwall of water brake valve 22, and be linked between upper valve core 221a and bottom spool 221b.Oiler 222 is set
Put above upper valve core 221a, be provided with upper valve core 221a for making oil return opening 223 when upper valve core 221a is located at highest point
Asphalt channel 226 between pressure oil export 225 keeps the upper channel 2211 of connection, is provided with bottom spool 221b and works as lower valve
Core 221b makes the lower channel 2212 that pressure oil-in 224 connects with the holding of pressure oil export 225 when moving down.In the present embodiment
Upper channel 2211 be the annular groove set around upper valve core 221a lateral surfaces, lower channel 2212 is around the outside of bottom spool 2211
The annular groove that face is set.(the first back-moving spring 227, upper valve core 221a lower ends are provided between upper valve core 221a and bottom spool 221b
Upper protruding block 2213 is provided with face, the upper end of (the first back-moving spring 227 is set on upper protruding block 2213, and with upper valve core 221a lower ends
Face is inconsistent, and lower protruding block 2214 is provided with bottom spool 221b upper surface, and the lower end of (the first back-moving spring 227 is set in lower protruding block
On 2214, and it is inconsistent with bottom spool 221b upper surface, upper valve core 221a and bottom spool 221b is located on water brake valve 22
Between inwall on be provided with through hole 2215, be connected between upper through hole 2215 and oil return opening 223 by asphalt channel 226.
Second back-moving spring 228, the upper end of second back-moving spring 228 and lower valve are provided between bottom spool 221b and the inwall of water brake valve 22
Core 221b lower surfaces are inconsistent, and lower end and the inwall of water brake valve 22 are inconsistent, and bottom spool 221b is located on water brake valve 22
Lower through-hole 2216 is provided with the inwall of lower section, is connected between lower through-hole 2216 and oil return opening 223 by asphalt channel 226.
Push rod 229 is provided with bottom spool 221b lower surfaces, the upper surface of push rod 229 and bottom spool 221b lower surface are inconsistent, push rod
229 are plugged in second back-moving spring 228, and the lower end of push rod 229 is provided with the asphalt channel being connected with pressure oil export 225
226.Water brake valve 22 also includes lid 22a and lower cover 22b, and upper lid 22a and lower cover 22b is removably disposed in sets respectively
Put in the top and bottom of water brake valve 22.Upper lid 22a and lower cover 22b can be set by modes such as grafting, socket, mode connects for screw
In water brake valve upper and lower ends, upper and lower covers are preferably separately fixed at water brake valve by the present embodiment by fixing screws 22c
Upper and lower ends.
Actuator 3 in the present embodiment includes brake disc 31, brake assembly 32 etc., belongs to prior art, repeats no more.Hold
ABS system 4 is additionally provided between row device 3 and brake apparatus 2, is passed through between ABS system 4 and water brake valve 22 and actuator 3
Pressure oil pipe is connected.The present embodiment also includes being used for controlling the controller 5 of ABS system 4, and the controller 5 in the present embodiment is
Vehicle-mounted computer, is electrically connected between ABS system 4 and controller 5, and the velocity sensor for sensing vehicle wheel rotational speed is provided with wheel
6, electrically connected between velocity sensor 6 and controller 5.
The operation principle of the present embodiment is：When brake pedal 1 is not stepped on, upper valve core 221a is located in water brake valve 22
Position be highest point.Now water brake valve 22 is closed, now in the presence of upper valve core 221a, oil return opening
223rd, the asphalt channel 226 between pressure oil export 225 is connected, the oil between pressure oil-in 224 and pressure oil export 225
Paths 226 are ended.After driver's brake pedal 1, control brake pump 21 is started working, will be low in oil storage tank 23
In oiler 222 in force feed injection water brake valve 22, upper valve core 221a is in the presence of low pressure oil from highest point to moving down
It is dynamic, (the first back-moving spring 227 is compressed, so that bottom spool 221b is moved down.Water brake valve 22 now, which is in, to be opened
State, now the asphalt channel 226 between oil return opening 223 and pressure oil export 225 ended in the presence of upper valve core 221a,
And the asphalt channel 226 between pressure oil-in 224 and pressure oil export 225 is connected in the presence of bottom spool 221b.This
When accumulator 24 by the energy stored in advance, pressure oil is pressed into brake valve by pressure oil-in 224, then from pressure
Oil export 225 is injected in actuator 3, so as to have the function that to reduce vehicle wheel rotational speed.With the injection of pressure oil, pressure oil export
Oil pressure at 225 is increasing, and when oil pressure is excessive, pressure oil is forced into the lower section of push rod 229 by asphalt channel 226, and will
Push rod 229 pushes up upwards, moves up bottom spool 221b and upper valve core 221a so as to by pressure oil-in 224 by push rod 229
Asphalt channel 266 ends between pressure oil export 255, by asphalt channel 226 between pressure oil export 225 and oil return opening 223
Connection so that pressure oil is returned in oil storage tank 23 from oil return opening 223, so as to reduce the oil in actuator 3 and water brake valve 22
Pressure.When driver loosen the brake 1 after, upper valve core 221a can be returned to upwards in the presence of (the first back-moving spring 227
Peak, asphalt channel 226 between oil return opening 223 and pressure oil export 225 is connected, in water brake valve 22 oil and hold
Oil in row device 3 is returned in oil storage tank 23 by asphalt channel 226 from oil return opening 223, remains next use.Bottom spool 221b exists
Replied upwards in the presence of second back-moving spring 228, by asphalt channel 226 between pressure oil-in 224 and pressure oil export 225
Cut-off so that accumulator 24 can not continue through water brake valve 22 and is stopped to the input pressure of actuator 3 oil, actuator 3,
Recover vehicle wheel rotational speed.
The above embodiments are only the preferred embodiments of the present invention, it is impossible to the interest field of the present invention is limited with this, because
This, the equivalent variations made according to scope of the present invention patent, for example still belonged to using similar technique, the equivalent product of similar structures
The scope that the present invention is covered.
Claims (10)
1. one kind is without power-assisted hydraulic control brake system, including brake pedal, brake apparatus, actuator, the brake pedal is with holding
It is connected between row device by brake apparatus, ABS system and control ABS systems is additionally provided between the actuator and brake apparatus
The controller of system, is electrically connected between the ABS system and controller, and the speed for sensing vehicle wheel rotational speed is provided with wheel and is passed
Sensor, electrically connected between the velocity sensor and controller, it is characterised in that：The brake apparatus includes brake pump, hydraulic pressure
Brake valve, oil storage tank, accumulator and oil transfer pump, it is connected between the water brake valve and the brake pedal by brake pump,
It is connected between the oil storage tank and accumulator by oil transfer pump, includes valve element, oiler, oil return on the water brake valve
Mouth, pressure oil-in, pressure oil export, asphalt channel and for by the reset assembly of valve core reset, highest to be in valve element
During place, the asphalt channel between the oil return opening, pressure oil export is connected, between the pressure oil-in and pressure oil export
Asphalt channel ended, after valve element moves down, the asphalt channel between the oil return opening, pressure oil export is ended,
Asphalt channel between the pressure oil-in and pressure oil export is connected, and the oiler passes through low pressure pipe and brake pump
It is connected, the oil return opening is connected by low pressure pipe with oil storage tank, and the pressure oil-in passes through pressure oil pipe and accumulator phase
Even, the pressure oil export is connected by pressure oil pipe with actuator.
2. according to claim 1 without power-assisted hydraulic control brake system, it is characterised in that：The valve element includes upper valve core with
Valve element, seal between upper valve core and bottom spool and water brake the valve inwall and coordinate, and linked between upper valve core and bottom spool
Coordinate, the oiler is arranged on above upper valve core, is provided with the upper valve core for making when upper valve core is located at highest point
Asphalt channel between oil return opening and pressure oil export keeps the upper channel of connection, be provided with the bottom spool when bottom spool to
The lower channel for making pressure oil-in be connected with the holding of pressure oil export when lower mobile.
3. according to claim 2 without power-assisted hydraulic control brake system, it is characterised in that：It is multiple that the reset assembly includes first
Position spring, the (the first back-moving spring are arranged between the upper valve core and bottom spool, are provided with the upper valve core lower surface
Upper protruding block, the (the first back-moving spring upper end are set on the upper protruding block, and inconsistent with the upper valve core lower surface, described
Lower protruding block is provided with the upper surface of bottom spool, the (the first back-moving spring lower end is set on the lower protruding block, and with it is described
The upper surface of bottom spool is inconsistent.
4. according to claim 3 without power-assisted hydraulic control brake system, it is characterised in that：Positioned at upper on the water brake valve
Through hole is provided with inwall between valve element and bottom spool, is connected between the upper through hole and oil return opening by asphalt channel
It is logical.
5. without power-assisted hydraulic control brake system according to Claims 2 or 3, it is characterised in that：The reset assembly also includes
There is second back-moving spring, the second back-moving spring is arranged between bottom spool and water brake the valve inwall, and described second
Back-moving spring upper end and the bottom spool lower surface are inconsistent, and lower end and water brake valve inwall are inconsistent.
6. according to claim 5 without power-assisted hydraulic control brake system, it is characterised in that：Under being located on the water brake valve
Lower through-hole is provided with inwall below valve element, is connected between the lower through-hole and oil return opening by asphalt channel.
7. according to claim 5 without power-assisted hydraulic control brake system, it is characterised in that：Set at the bottom spool lower surface
There is push rod, the push rod upper surface and the lower surface of the bottom spool are inconsistent, and the push rod is plugged in second back-moving spring,
The push rod lower end is provided with the asphalt channel being connected with pressure oil export.
8. according to claim 1 without power-assisted hydraulic control brake system, it is characterised in that：The water brake valve also includes
Upper lid and lower cover, the upper lid and lower cover are removably disposed in are arranged on water brake valve top and bottom respectively.
9. according to claim 6 without power-assisted hydraulic control brake system, it is characterised in that：The upper lid is set by fixing screws
Put and be arranged on the water brake valve lower end by fixing screws in the water brake valve upper end, the lower cover.
10. according to claim 1 without power-assisted hydraulic control brake system, it is characterised in that：Use is provided with the accumulator
In being additionally provided with oil pump electric-control system, the pressure sensing on the pressure sensor for sensing pressure in accumulator, the oil transfer pump
Electrically connected between device and oil pump electric-control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779368.6A CN107628010A (en) | 2017-09-01 | 2017-09-01 | Without power-assisted hydraulic control brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710779368.6A CN107628010A (en) | 2017-09-01 | 2017-09-01 | Without power-assisted hydraulic control brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107628010A true CN107628010A (en) | 2018-01-26 |
Family
ID=61100322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710779368.6A Pending CN107628010A (en) | 2017-09-01 | 2017-09-01 | Without power-assisted hydraulic control brake system |
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| Country | Link |
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| CN (1) | CN107628010A (en) |
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|---|---|---|---|---|
| CN2275977Y (en) * | 1996-10-25 | 1998-03-11 | 成都市双流县东升液压附件厂 | Hydraulic brake booster for vehicle |
| EP1623118B1 (en) * | 2003-04-02 | 2006-08-23 | Robert Bosch Gmbh | Reciprocating pump |
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| CN205327050U (en) * | 2016-01-25 | 2016-06-22 | 山东华伟液压科技有限公司 | Full hydraulic brake valve |
| CN105752064A (en) * | 2016-02-29 | 2016-07-13 | 北京长城华冠汽车科技股份有限公司 | Automobile hydraulic braking system |
| CN106114828A (en) * | 2016-06-17 | 2016-11-16 | 西安航空制动科技有限公司 | A kind of double-brake system for aircraft single-wheel brake |
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Application publication date: 20180126 |